Paste drying device for a printing web



Aug. 9,- 1932.

O. C. ROESEN PASTE DRYING DEVICE FOR A PRINTING WEB Original Filed Nov. l5,- l927 IwNl ANJWQ ram..

VILLIQNI Patented Aug. 9, 1932 UNITED STATES PATNT FFCE Y OSCAR CHARLES ROESEN, OF BROOKLYN, NEW YORK, ASSIGNOR TO WOOD NEWSPAPER MACHINERY CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF VIRGINIA PASTE DRYING DEVICE FOR A PRINTING WEB Application filed November 15, 1927, Serial No. 233,441. Renewed January `6, 1932.

This invention relates to means for preventing the sticking of a printing web, where a fresh paster has been made, to the rollers over which it passes on the way to the press. V; The principal object of the invention is to provide means whereby the fresh paste on the web will be treated in such a way as to eliminate its stickiness and thus prevent it from adhering to the rolls. The invention 1o also involves means for applying powder to both sides of the web simultaneously and means cooperating with the fresh web roll for actuating theV powder applying means at the time when the fresh pasted portion of the web is to pass to the press, and take it out of operative position the rest of the time, so as to restore the powder applying means to normal condition and prevent its engagement with the web.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawing in which Fig. 1 is an end view of a web roll reel showing the normal position of the parts just before a paster is made;

Fig. 2 is a similar view showing the fresh web roll on enlargedscale, and a preferred embodiment of this invention connected with and controlled thereby, and

Fig. 3 is a sectional view on the line 3 3 of Fig. 2 showing the powder rolls.

l/Vhen making a flying paster on a web press, the paste is apt to protrude from the newly7 spliced web down between the incoming and splicing webs. When this happens it makes the paster adhere to one of the rolls over which the web must pass. If it actually does adhere it breaks the web and also if it does not actually stick to the roll it leaves paste upon it which is afterwards applied to the web once in every revolution of this roll until it dries.

This invention relates to means for avoiding this dil'liculty. I have shown the invention as applied to a web press in which there is a. reel 10 for holding the rolls of paper including the fresh web roll 11. This roll rotates with the reel and also rotates on its own shaft 12. An electrical commutator and Contact 13 is adapted to be brought into connection once during a rotation of this roll on its own axis. The electric line 111 which is completed at this contact 13 also is provided with a switch 15 adapted to be set by hand to hold it open except when a paster is about to be made. Then the switch is closed and the next time the roll is turned around to the pasting position, this circuit will be closed.

The closing of this circuit energizes a solenoid 16 which moves a plunger 17 connected with a lever 18. This lever is provided with a roll 19 which preferably is covered with plush. The bearings of this roll are normally forced out by springs 2O so as to force it into contact with a roll 21 which constitutes the wall and feeding means of a receptacle 2:2. In this receptacle is a resist powder which, when applied to the pasted portion of the web, will have a tendency of preventing the paste from adhering to any roll which it may touch. It absorbs the moisture in the paste and renders it useless as a paste or an adherent.

yThe lever 18 is mounted on a shaft 24 having a segmental gear Q5 thereon meshing` with a similar gear 25 on another shaft Q4 having` an arm 26 provided with another roll 19. This contacts with a similar roll Q1 in a second resist powder receptacle 22. One of these rolls 19 is located on each side of the web N in its course to the press.

It will be seen, t icrefore, that the operation on the device is very simple. V/Vhen the paster is about to be made, the contact or push button 15 is closed and then, on the next rotation of the roll 11, the contact 13 is closed, completing the circuit to the solenoid. This swings the two rolls 19 into contact with the web. The movement of the web rotates these rolls and when they contact 13 is opened again by the rotation of the roll 11, on its own axis. the solenoid is Cle-energized and the rolls 19 return to the position shown in 2. These rolls 19 are kept pressed forward against the rolls 21 so that even when in contact with the web they will rotate on their own axes and tend to turn the two feed rolls 21, thus insuring the coating of the rolls 19 with the powder from the two receptacles 22. These gli lub

rolls 19 are covered with plush to enable them to carry the powder more efficiently.

It requires only a single source of powder to move both rolls into operative position and the springs keep them in Contact with the powder rolls at all times so that no rotating means is required. The contact or commutator 13 is not shown in detail as it is a part of practically all of these pasting devices and is merely a meansfor permitting a contact, once for each revolution, and for an appreciable length of time. In this way the paste in dried on both sides and the breaking by its sticking to the guide rolls on the way to the printing couple is avoided and also the printing of a wet paste spot several times on the web.

Although I have illustrated and described only a single form of the invention I am aware ofthe fact that modifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims. Therefore, I do not wish to be limited in these respects but what I do claim is 1. In a web press, the combination with a fresh web roll supporting shaft adapted to rotate on its axis, and a contact on this shaft for completing a circuit at a predetermined time during the revolution of the roll, of means for engaging the surface of the fresh web roll for pasting the same to the expiring web roll and means operated by the closing of said contact for applying powder to the surface of the web after pasting, for

the purpose described.

2. The combination with means for 'feeding the web to a printing press, of a freely rotatable roll covered with powder for applying the powder to the web after the paster is made to prevent its sticking to the rolls of the press, said roll being located in position to engage the web so as to be propelled by contact with the web.

3. The combination with means for feeding and guiding the web to a web press, of means for forcing the web against a fresh web roll for performing the pasting operation, and rolls for applying powder to both sides of the web to remove the adhesive properties of any paste on the surface thereof.

4. In a web press, the combination with means for guiding the web along a path, of a receptacle containing a resist powder, a roll at the discharge side of the receptacle, a second roll movably mounted in contact with the first named roll to receive powder therefrom, and means for moving the second roll into contact with the web to apply powder to the surface thereof.

5. In a web press, the combination with means for guiding the web, of a receptacle containing a resist powder, a roll at the discharge side of the receptacle, a soft covered roll movablyk mounted in contact with the' first named roll to receive powder therefrom,

means for moving the soft covered roll into contact with the web to apply powder to the vsurface thereof, and means for keeping the soft covered roll in contact with the first named roll while in engagement with the web to cause the two rolls to be rotated by the movement of the web.

6. In a web press, the combination of means for guiding the web along a path, of a pair of receptacles on the opposite sides of the web for resist powder, a pair of pivoted arms on the opposite sides of the web, a freely rotatable plush covered roll mounted on each one of said arms, said arms being geared together and said rolls being adapted to receive powder from said receptacles respectively, and means for swinging said arms to bring the rolls into contact at the oppositev sides of the web for applying powder thereto.

7. In a web press, the combination with means for guiding the web along a path, of a powdered roll movably mounted, and means for moving the roll into contact with the web to apply powder to the surface thereof and out of contact therewith.

In testimony whereof I have hereunto af fixed my signature.

OSCAR CHARLES ROESEN. 

